Tone changer unit for a stringed musical instrument



FIG. 1 is a right perspective view of a tone changer unit for a stringed musical instrument showing my new design;

FIG. 2 is a left perspective view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a rear elevational view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof. 

The ornamental design for a tone changer unit for a stringed musical instrument, as shown and described. 